This particular project happens to be set up to work with a PICDEM.net2 board, which has 8 LEDs, 4 switches, a pot, a temperature sensor, and an LCD display. So, we have declared the following TCPmaker Variables in this project, which are summarized in a comment header in file mtGen.c:

//*****************************************************************************
//
// Variable Declarations:
// ======================
// The following variables were created in TCPmaker's Visual Page Designer, for
// the purpose of transferring specific, named data items between the device
// and the PC browser:
//
// Integer Variables:
// ==================
// D1 (id="i0")
// D2 (id="i1")
// D3 (id="i2")
// D4 (id="i3")
// D5 (id="i4")
// D6 (id="i5")
// D7 (id="i6")
// D8 (id="i7")
// Btn0 (id="i8")
// Btn1 (id="i9")
// Btn2 (id="i10")
// Btn3 (id="i11")
//
// Numeric Variables:
// ==================
// Pot1 (id="n0")
// Degrees (id="n2")
//
// String Variables:
// =================
// Sv0 (id="s0")
// Sv1 (id="s1")
//
// Communication Controls:
// =======================
// It1 (id="it1")
//
// Variables that travel either into or out of the device are declared
// here.
//
//*****************************************************************************